The evolution of the dust component of the circumsolar protoplanetary disk

Details The evolution of the dust component of the circumsolar protoplanetary disk The evolution of the dust component of the circumsolar protoplanetary disk

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987avest..21..216s&link_type=abstract

Astronomicheskii Vestnik (ISSN 0320-930X), vol. 21, July-Sept. 1987, p. 216-220. In Russian.

Astronomy and Astrophysics

Astronomy

5

Interplanetary Dust, Planetary Evolution, Protoplanets, Solar System, Perturbation Theory, Planetary Gravitation

Scientific paper

Settling of dust particles to the central plane of the non-turbulent gas-dust circumsolar disk is discussed. Gravitational instability in the dust subdisk is considered. Dispersion equation for radial perturbations is obtained. Critical values of the density and wavelength λc are found which give maximum masses of dust condensations 1022 and 1024g in the zones of Jupiter and Neptune respectively. Due to negligible small thermal velocities of particles in the gas all modes with λ < λc are unstable, shortwave perturbations growing faster than longwave ones. Earlier formation of small dust condensations removes difficulties with obtaining kilometersize bodies, necessary for formation of the Oort cometary cloud.

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